package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;
import java.lang.reflect.Method;
import java.time.LocalDateTime;
import java.time.LocalTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {

    /**
     *
     */
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut() {}


    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint) {
        log.info("开始公共字段自动填充");
        // 获取方法签名 操作类型
        MethodSignature signature = (MethodSignature) joinPoint.getSignature(); // 获取方法签名
        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class); // 获取注解对象
        OperationType operationType = autoFill.value(); // 获取注解对象中的值

        // 获取实体参数
        Object[] args = joinPoint.getArgs();
        if (args == null || args.length == 0) {
            return;
        }
        Object entity = args[0]; // 获取实体参数
        log.info("公共字段自动填充，操作类型：{}", operationType);
        // 获取当前时间
        LocalDateTime time = LocalDateTime.now();
        // 当前登录用户id
        Long currentId = BaseContext.getCurrentId();
        if (operationType == OperationType.INSERT) {
            // 填充创建时间、创建人、更新时间、更新人
            try {
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setCreateUser  = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser  = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                // 调用方法
                setCreateTime.invoke(entity, time);
                setCreateUser.invoke(entity, currentId);
                setUpdateTime.invoke(entity, time);
                setUpdateUser.invoke(entity, currentId);
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else if (operationType == OperationType.UPDATE) {
            // 填充更新时间、更新人
            try {
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser  = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                // 调用方法
                setUpdateTime.invoke(entity, time);
                setUpdateUser.invoke(entity, currentId);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }
}
